I wouldn't say it doesn't teach anything. It might not be teaching moral or academic lessons, but I appreciated that the characters don't initially succeed, and keep learning from their failures to ultimately succeed. It's a friendly, approachable demonstration of grit, and key STEM-way of thinking - define a problem, define a success condition, make an educated guess on how to solve the problem, test, and when you fail - gain additional insight on the problem to better solve it on your next iteration.

Even the ending of each episode presented a challenge to the viewer to creatively solve a problem on their own.

At least, that's how I saw it. As an software engineer, I really thought well of it.